高原低氧环境可以引起人体肺动脉高压及右心受累,已为众所周知的事实。然而高原低氧是否可以影响左心功能,学者们尚有不同见解,有些人认为并无左心受累,有些人则认为有左心功能的改变,迄今争论不止,尚无一致的定论。为此,本文作者对83例由平原抵达海拔3,658米高原的健康人,通过无创伤性方法,进行了左心功能的测定,情况如下: It has been a well-known fact that the plateau hypoxic environment can cause pulmonary hypertension and right heart involvement in humans. However, high altitude hypoxia can affect left ventricular function, scholars still have different opinions, some people think that there is no left ventricular involvement, while others think there is a change in left ventricular function, controversy so far, there is no consistent conclusion. To this end, the authors performed a left ventricular function test on 83 healthy subjects arriving at a plain of 3,658 meters above sea level by noninvasive methods, as follows: